2004 Nissan Sentra Locks

Hi everyone, I've searched and searched, but not come up with a solution, so I hope someone here can help who is familiar with this vehicle.
I'm installing an Ungo S100 (mfg by Directed) into a 2004 Nissan Sentra. Everything has gone smooth with the exception of the door lock install. I'm using the directechs directwire info, and I have checked that info with the service manual for the car. I am setting up the car for progressive unlocking, so I set the first lock output to a relay, which I connected to the SECU (pin 13). I connected the channel 3 output to the gray wire with no relay, and programmed it for the second unlock pulse.

The issue now is that the driver's door will not work at all, either from the fob or door switch, even after I have disconnected the relay and checked fuses. The other 3 work fine, but I am worried that something has gone bad with the SECU or actuator. Does anyone have experience with these cars, and do you have any ideas? I'm willing to sacrifice progressive unlocking if I could just figure out how to get my driver's door to lock or unlock. Two pulses to the gray wire will not work, so there has to be an answer.

I appreciate any and all help you could provide.

It is possible that you damaged the SECU, particularly if you wired the relay backward and didn't use a fuse....or the fuse used was too large.

Did you fuse the constant-power supply going to your first-unlock relay?

How did you connect the relay to the car? You did cut the car's factory driver-unlock wire in half and connect each end to the relay, right?

Should have gone like this:

87, 85: FUSED 12 volts constant
86: (negative) first-unlock output from RS
87a: SECU-side of unlock motor wire
30: door-side of unlock motor wire


But anyway.......... whatever you did with the relay, you got rid of it and put the wire back to factory, right?

Time to test it.....

--Does it rest at ground?

--Does it flip to positive when you press unlock?

So if I wanted to just wire it without priority unlock, according to your post at carsound, I would just use pin 14, wired with the relay you described and cutting the wire, with a double pulse from the alarm brain. The car doesn't have factory security but does have keyless entry, so it looks like 2 pulses to pin 14 unlocks all the doors and does the dome light, etc. Also, I would just use the factory relay with the negative trigger from the brain (already works fine) for the locking. Does this sound right? Thanks for your help, I appreciate it.